<template>
  <div class="search-div">
    <!-- 搜索表单 -->
    <!-- 搜索表单 -->
    <el-form label-width="70px" size="small">
      <el-form-item label="角色名称">
        <el-input
          v-model="queryDto.roleName"
          style="width: 100%"
          placeholder="角色名称"
        ></el-input>
      </el-form-item>
      <el-row style="display: flex">
        <el-button type="primary" size="small" @click="searchSysRole">
          搜索
        </el-button>
        <el-button size="small" @click="resetData">重置</el-button>
      </el-row>
    </el-form>

    <!-- 添加按钮 -->
    <div class="tools-div">
      <el-button type="success" size="small" @click="addShow">添 加</el-button>
    </div>

    <!-- 添加角色表单对话框 -->
    <!-- 页面表单 -->
    <el-dialog v-model="dialogVisible" title="添加或修改角色" width="30%">
        <el-form label-width="120px">
            <el-form-item label="角色名称">
                <el-input v-model="sysRole.roleName"/>
            </el-form-item>
            <el-form-item label="角色Code">
                <el-input  v-model="sysRole.roleCode"/>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="submit">提交</el-button>
                <el-button @click="dialogVisible = false">取消</el-button>
            </el-form-item>
        </el-form>
    </el-dialog>

    <!--- 角色表格数据 -->
    <el-table :data="list" style="width: 100%">
      <el-table-column prop="roleName" label="角色名称" width="180" />
      <el-table-column prop="roleCode" label="角色code" width="180" />
      <el-table-column prop="createTime" label="创建时间" />
      <el-table-column label="操作" align="center" width="280" #default="scope">
        <el-button type="primary" size="small" @click="editShow(scope.row)">修改</el-button>
        <el-button type="danger" size="small" @click="deleteById(scope.row)">删除</el-button>
        <el-button type="warning" size="small" @click="showAssignMenu(scope.row)">分配菜单</el-button>
      </el-table-column>
    </el-table>

    <!-- 分配菜单的对话框 
    // tree组件添加ref属性，后期方便进行tree组件对象的获取
    -->
    <el-dialog v-model="dialogMenuVisible" title="分配菜单" width="40%">
        <el-form label-width="80px">
            <el-tree
                    :data="sysMenuTreeList"
                    ref="tree"   
                    show-checkbox
                    default-expand-all
                    :check-on-click-node="true"
                    node-key="id"
                    :props="defaultProps"
            />
            <el-form-item>
                <el-button type="primary"  @click="doAssign">提交</el-button>
                <el-button @click="dialogMenuVisible = false">取消</el-button>
            </el-form-item>
        </el-form>
    </el-dialog>

    <!-- eslint-disable-next-line vue/no-multiple-template-root -->
    <!--分页条-->
    <el-pagination
      v-model:current-page="pageParams.page"
      v-model:page-size="pageParams.limit"
      :page-sizes="[10, 20, 50, 100]"
      @size-change="fetchData"
      @current-change="fetchData"
      layout="total, sizes, prev, pager, next"
      :total="total"
    />
  </div>
</template>

<script setup>
    import { ref, onMounted } from 'vue'
    import { GetSysRoleListByPage , SaveSysRole, UpdateSysRole, DeleteSysRoleById, GetSysRoleMenuIds, DoAssignMenuIdToSysRole} from '@/api/sysRole';
    import { ElMessage, ElMessageBox } from 'element-plus'

    //--------------------给角色分配菜单
    const defaultProps = {
      children: 'children',
      label: 'title',
    }
    const dialogMenuVisible = ref(false)
    const sysMenuTreeList = ref([])

    // 树对象变量
    const tree = ref() 

    // 默认选中的菜单数据集合
    let roleId = ref()
    const showAssignMenu = async row => { 
      dialogMenuVisible.value = true
      roleId = row.id
      const { data } = await GetSysRoleMenuIds(row.id)   // 请求后端地址获取所有的菜单数据，以及当前角色所对应的菜单数据
      sysMenuTreeList.value = data.sysMenuList
      tree.value.setCheckedKeys(data.roleMenuIds)   // 进行数据回显
    }

    //---------------删除角色--------------------------------       
    // 删除数据
    const deleteById = (row) => {
        ElMessageBox.confirm('此操作将永久删除该记录, 是否继续?', 'Warning', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning',
        }).then(async () => {
            const {code } = await DeleteSysRoleById(row.id)
            if(code === 200) {
                    ElMessage.success('删除成功')
                    pageParams.value.page = 1
                    fetchData()
            }
        })
    }
    //---------------修改角色--------------------------------       
    // 修改按钮点击事件处理函数
    const editShow = (row) => {
        sysRole.value = {...row}
        dialogVisible.value = true
    }


    //---------------添加角色--------------------------------       
    // 控制对话是否展示的变量
    const dialogVisible = ref(false)

    //进入添加
    const addShow = () => {
        dialogVisible.value = true
    }

    //表单数据模型
    const defaultForm = {
        id: "",
        roleCode: "",
        roleName: ""
    }
    const sysRole = ref(defaultForm)   // 使用ref包裹该对象，使用reactive不方便进行重置
    
    // 添加角色和修改
    const submit = async () => {
        if (!sysRole.value.id) {
            //没有id，添加
            const { code } = await SaveSysRole(sysRole.value) ;
            if(code === 200) {
                dialogVisible.value = false
                ElMessage.success('操作成功')
                //刷新页面(列表)
                fetchData()
            }
        } else {
            //有id，修改
            const {code} = await UpdateSysRole(sysRole.value)
            if (code === 200) {
                dialogVisible.value = false
                ElMessage.success('操作成功')
                //刷新页面(列表)
                fetchData()
            }
        }
    }

    //---------------角色列表--------------------------------   
    // 分页条总记录数
    let total = ref(0)

    // 定义表格数据模型
    let list = ref([])

    //分页数据
    const pageParamsForm = {
        page: 1, // 页码
        limit: 10, // 每页记录数
    }
    const pageParams = ref(pageParamsForm) // 将pageParamsForm包装成支持响应式的对象

    // 搜索表单数据
    const queryDto = ref({ roleName: '' })


    // 页面加载完毕以后请求后端接口获取数据
    onMounted(() => {
        fetchData()
    })

    // 搜索按钮点击事件处理函数
    const searchSysRole = () => {
        //queryDto.value.roleName = ""
        fetchData()
    }

    // 远程调用后端分页查询接口
    //操作方法：列表方法和搜索方法
    //列表方法：axios请求调用接口得到列表数据
    const fetchData = async () => {
        const { data, code, message } = await GetSysRoleListByPage(
            pageParams.value.page,
            pageParams.value.limit,
            queryDto.value
        )
        list.value = data.list
        total.value = data.total
    }


    const doAssign = async () => {
    const checkedNodes = tree.value.getCheckedNodes() ; // 获取选中的节点
    const checkedNodesIds = checkedNodes.map(node => {  // 获取选中的节点的id
        return {
            id: node.id,
            isHalf: 0
        }
    })
        
    // 获取半选中的节点数据，当一个节点的子节点被部分选中时，该节点会呈现出半选中的状态
    const halfCheckedNodes = tree.value.getHalfCheckedNodes() ; 
    const halfCheckedNodesIds = halfCheckedNodes.map(node => {   // 获取半选中节点的id
        return {
            id: node.id,
            isHalf: 1
        }
    })
        
    // 将选中的节点id和半选中的节点的id进行合并
    const menuIds = [...checkedNodesIds , ...halfCheckedNodesIds]  
    console.log(menuIds);

    // 构建请求数据
    const assignMenuDto = {
        roleId: roleId,
        menuIdList: menuIds
    }
 
    // 发送请求
    await DoAssignMenuIdToSysRole(assignMenuDto) ;
    ElMessage.success('操作成功')
    dialogMenuVisible.value = false

    } 
</script>

<style scoped>
.search-div {
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid #ebeef5;
  border-radius: 3px;
  background-color: #fff;
}

.tools-div {
  margin: 10px 0;
  padding: 10px;
  border: 1px solid #ebeef5;
  border-radius: 3px;
  background-color: #fff;
}
</style>